From 4fb166ebe401f3ccaac6c8e5abb88109d949b6dc Mon Sep 17 00:00:00 2001
From: techniX <sergei.mozhaisky@gmail.com>
Date: Sun, 8 Dec 2019 00:48:35 +0200
Subject: [PATCH] fix protection

---
 transmitter.lua | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/transmitter.lua b/transmitter.lua
index 8225346..ba39b42 100644
--- a/transmitter.lua
+++ b/transmitter.lua
@@ -34,9 +34,13 @@ minetest.register_node("ham_radio:transmitter", {
     meta:set_string("infotext", '')
   end,
   on_receive_fields = function(pos, formname, fields, sender)
+    if not minetest.is_player(sender) then
+      return
+    end
+
     if (
       fields.quit ~= "true"
-      or minetest.is_protected(pos, name) 
+      or minetest.is_protected(pos, sender:get_player_name()) 
       or not ham_radio.validate_frequency(fields.frequency)
     ) then
       return